Improvement in combined door spring and check



y R.C..L0VBQ Comb-ined Door Spring and Check. No.216,1688.

Patented Ju'ne 17, 18T-9.

ATTORN EY.

'TNI'TED STATES PATENT OETICE ROBERT O. LOVE, OF PHILADELPHIA,PENNSYLVANIA.

IMPROVEMENT IN COMBINED DOOR SPRING AND CHECK.

Specification forming part of Letters Patent No. 216,688, dated June 17,1879; application lilel December 27, 1878.

To all whom it may concer/n.'

Be it known that I, ROBERT C. LovE, of the city and countyofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in Door Spring and Cheek, which improvement is fully setforth in the fol- 'lowing specification and accompanying drawings, in.which- Figure l is a face view of the device embodying my invention.Fig. 2 is a horizontal section in line x x, Fig. 1. Fig. 3 is a sectionin line y y, Fig. 4. Fig. 4 is a vertical section in line z z, Fig. 1.Fig. 5 is a view of the check-lever and interior of the spring-case.Fig. 6 is a vertical section of the cord-holder. Fig. 7 is a View of oneend thereof.

Similar letters -of reference indicate corre sponding parts in theseveral gures.

My invention consists of mechanism, substantially as hereinafter stated,whereby the door in closing vis temporarily arrested, so as to beprevented from slamming.

It also consists of a lever tted loosely on its post and carrying acatch, which engages with the spring-drum, whereby the lever is yraised.

l It also consists of the covering -frame or shell, provided with anincline for disen gagin g the spring-drum and lever when elevated, andpermitting the door to be opened to a great or full extent.,

It also consists of the lever carrying a latch having a stud, which isadapted to engage with a suitable portion of the shell or covering frameor plate for holding the lever in its elevated position, and a headwhich is adapted to be struck, in order to withdraw the stud and releasethe lever.

Referring to the drawings, A represents a door, and B the frame thereof.Secured to the outer face of the top piece of the frame is a buffer, C,and to'the inner face thereof a vertically-extending holder, D, forattaching one end of a cord, D', whose other end is adapted to be woundon and unwound from a springdrum, as will be hereinafter more fullyexplained.

E represents a shell or frame, from the hack plate whereof projects apost, F, on which is loosely fitted a 1ever,G, and a drum, H, to

which drum is connected one end of a spring, a., whose other end isconnected to theV post F. A spring, I1, is also connected to the backplate of the shell or post F, so as to bear against the lever Gr andreturn it to its normal position, which `is horizontal or down,\as

posed that it will 'strike the buffer O and cause the stud e to emergefrom the opening e'.

The operation is as follows: When the door is sh ut the lever G is belowthe top of the doorframe. On opening the door, owing to the cord D'being Xed to the holder D, the drum H is caused to rotate, the spring ato wind,

and the cord to play out or unwind. The

notch d engages with the lower end of the catch J, thus locking thelever G and drum H, and causing said lever to turn in the post F, andthereby rise. When the lever has reached its highest point the stud edrops into the opening e', and serves to hold the lever ele vated andstationary. The catch rides on the inclines E', and is thereby clearedof the notch d, whereby neither the latch nor catch prevents 'thefurther. rotationof the drum, and.

consequently permits the door to be opened to a great or full extent, asdescribed.

When thedoortis let go in order to be closed, the power of thespring ais exerted to rotate the drum and wind the cord D' thereon, thus drawingin the door. The lever G, remaining locked, reaches the buffer C, andthe head K of the latch K strikes against it, thus cheeking the door andpreventing slamming, and causing the stud e and back plate of the shellE to disengage, whereby the lever, being no longer controlled, is forcedby its spring b to its lowered position, so as to pass under the toppiece of the door-frame and permit the full closing of the door withease.

In order to prevent fracture and strain of the lever G, a stop, a', ofrubber or other elastic material, is secured to a proper part of theshell for the lever tostrike against.

To the door-jamb is xed a stop of rubber or other elastic material, L,which has an inclined face, and is tted between dovetailed pieces b bsecured to the jamb, whereby the stop is reliably held in position, andits inclined face prevents noise of the shutting door, and. in ameasure, wedges against the door to hold the same. n

The cord-holder l) consists of a rotating cylinder held to afastening-plate, L', by a suitable screw, and having a serrated face,which engages with a serrated face of the fasteningplate.

When the screw is loosened the cylinder may be rotated to the requiredextent. Then tighten the screw, and the serrations engage, whereby thecylinder is immovable and the cord cannot slip. By this provision of therotation of the cylinder the length of the cord D may be adjusted or itsslack taken up, as required or desired.

Having thus described my invention, what I claim as new, and desire tosecure by Let-A ters Patent, is-

-pose set forth. Y Y 4. The combination, with the spring-drum1 Ythepurpose set forth.

3. The lever G, carrying the catch J, in comw bination with the frame E,provided with the incline E', substantially as and for the purandbuffer, of the lever G, provided with the latch K, having the head K andstud '6, substantially as and for the purpose set forth.

5. The combination, with the lever G, of the shell having an elasticstop, a', substantially as and for the purpose set forth.

ROBT. C. LOVE.

Witnesses J oHN A. WIEDERSHEIM, H. E'. GARsED.

